Driving method of display device and display device

A display device comprising a plurality of pixel units, each of the pixel units comprising a pixel driving circuit having a driving transistor and a light emitting element coupled to the pixel driving circuit, wherein the display device further comprising:

• a sensing module, configured to sense threshold voltages of the driving transistors of the plurality of pixel units and to calculate an external compensation value for display data signal according to the threshold voltages of the driving transistors of the plurality of pixel units;
• a control module, configured to control the pixel driving circuit to perform an internal compensation on the threshold voltage of the driving transistor;
• and
• a superimposing module, configured to superimpose the external compensation value and the display data signal, wherein a data signal obtained by superimposing is input into the pixel driving circuit for driving the light emitting element to emit light.